How to Replace Yardworks Trimmer String

Grass trimmers from Yardworks are essential for keeping lawns neat, tackling weeds in hard-to-reach spots, and creating crisp edges along sidewalks and flower beds. Over time, the nylon string wears down from friction against tough grass, rocks, and fences, requiring periodic replacement to maintain cutting power. This guide provides a complete walkthrough for installing new string, drawing from official manuals and user demonstrations to ensure safe, effective results. Whether you have a cordless 20V model like the 267-2903 or an electric 5.5A version, these principles apply universally.

Understanding Your Yardworks Trimmer Models

Yardworks offers a range of trimmers suited for different yard sizes and preferences. Cordless models, such as the 20V 267-2903, provide mobility without cords, ideal for medium yards. Electric corded options like the 15-inch 5.5A trimmer/edger deliver consistent power for larger areas. Two-cycle gas-powered variants, including curved-shaft YW2500 or straight-shaft YW2510, suit heavy-duty tasks but require fuel mixing.

Key features across models include adjustable handles, edger guides for straight-line trimming, and bump-feed heads that dispense string with ground taps. Familiarizing yourself with your model’s head type—bump-feed, automatic, or manual—is crucial before starting replacement, as mechanisms vary slightly.

• Cordless models: Battery-powered, lightweight, quick string reload via pre-wound spools.
• Electric models: Corded for unlimited runtime, often with front handles for control.
• Gas models: Powerful for thick weeds, but need more maintenance like oil-fuel mixes.

Essential Tools and Materials for String Replacement

Before diving in, gather these items to streamline the process:

Opt for 0.080-inch diameter nylon string, as it’s the manufacturer-recommended size for balanced performance and head compatibility. Pre-wound spools simplify installation compared to bulk string winding.

Safety Precautions Before Starting

Safety first: Disconnect power sources to prevent accidental starts. For cordless trimmers, remove the battery; for electric, unplug from the outlet; for gas, ensure the engine is off and cooled.

• Wear protective gear: Safety glasses, long pants, closed-toe shoes, and gloves shield against flying debris.
• Work in a stable, flat area away from children and pets.
• Inspect the trimmer for damage; never use if the head guard is cracked.
• Allow the tool to cool if recently used, as hot components can cause burns.

These steps, emphasized in official manuals, minimize risks during maintenance.

Step-by-Step Guide to String Installation

Follow these detailed instructions, adapted from Yardworks manuals and video tutorials, for most models. Time required: 5-10 minutes.

1. Prepare the trimmer head: Flip the trimmer upside down to access the bottom. Grip the cutter knob (black cap) and rotate counterclockwise to unscrew and remove it. Clear grass clippings, dirt, or old string remnants with a brush.
2. Remove the old spool: Lift out the inner spool and attached spring. Note the spring’s position for reassembly— it anchors the new spool. Dispose of worn parts responsibly.
3. Insert the spring into new spool: Place the small metal spring into the center hole of your pre-wound replacement spool. This ensures proper tension for bump-feeding.
4. Align and thread the string: Position the spool inside the outer hub. Feed the string ends through the eyelets or guide holes on the hub’s sides. Pull gently to extend 4-6 inches per side, avoiding tangles.
5. Secure the assembly: Rotate the spool clockwise while inserting to preload tension. Slot excess string into hub guides if present.
6. Reattach the cutter knob: Align and twist clockwise until hand-tight. Do not overtighten to avoid stripping threads.
7. Test advancement: Flip the trimmer right-side up. Tap the head on the ground (power off) to advance string; trim excess with built-in cutters or scissors to 6-7 inches.

For models with screws, like some electric versions, use a Phillips screwdriver to remove a retaining screw before extracting the spool. Line up the new spool in the groove and refasten securely.

Troubleshooting Common String Issues

Even with proper installation, problems arise. Here’s how to fix them:

• String won’t advance: Check spring placement and spool seating. Clean eyelets of debris. Solution: Re-thread and tap firmly.
• Uneven wear or breakage: Indicates wrong diameter or dull blade. Use 0.080″ string; inspect guard blade and sharpen if needed.
• Tangling during use: Pre-wound spools may unwind improperly. Wind bulk string manually: Soak in water, anchor end, and wrap tightly in layers.
• Head spins freely: Loose knob or worn clutch. Tighten or replace parts per manual.

If issues persist, consult the model-specific manual for diagrams.

Advanced Maintenance for Longevity

Beyond string replacement, routine care extends your trimmer’s life:

• Cleaning: After each use, remove debris from the head and shaft. Use compressed air for vents.
• Battery care (cordless): Store at 50% charge; avoid full discharges. Charge in cool areas.
• Gas models: Drain fuel post-season; run dry to prevent carburetor clogs. Mix fresh 50:1 oil-fuel ratio.
• Seasonal storage: Disassemble head, apply light oil to moving parts, and hang vertically.

These practices, from manufacturer guidelines, prevent corrosion and mechanical wear.

Enhancing Performance: Tips and Tricks

To maximize efficiency:

• Adjust shaft length for ergonomic height—loosen collar, extend, and retighten.
• Switch to edger mode by rotating the head 180 degrees for sidewalk precision.
• Maintain 6-8 inch string length; longer invites tangles and motor strain.
• For thick weeds, angle the trimmer head slightly upward.

Users report cordless models excel for edging near fences due to maneuverability.

Frequently Asked Questions (FAQs)

What string size fits Yardworks trimmers?

Most models use 0.080-inch diameter nylon line. Check your manual for exact specs.

Can I use bulk string instead of pre-wound spools?

Yes, but winding requires practice to avoid loops. Pre-wound is faster for beginners.

How often should I replace the string?

Depends on usage: Weekly for heavy lawns, monthly for light trimming.

Is the Yardworks trimmer suitable for large properties?

Cordless for small-medium yards; gas models for acres.

What if my trimmer won’t start after string replacement?

Verify power connection and check for loose wires in the head.